Chemistry Practice Flashcard

Front

What is the charge of a neutron?

Back

Neutrons have a neutral charge (no charge).

Front

What does a subscript in a chemical formula indicate?

Back

A subscript indicates the number of atoms of the element in the compound.

Front

How many protons are in the element Nitrogen?

Back

Nitrogen has 7 protons.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O.

Tags

NGSS.MS-PS1-1

Front

How many hydrogen atoms are in a molecule of water (H2O)?

Back

There are 2 hydrogen atoms in a molecule of water.

Tags

NGSS.MS-PS1-1

Front

How many oxygen atoms are in a molecule of water (H2O)?

Back

There is 1 oxygen atom in a molecule of water.

Tags

NGSS.MS-PS1-1

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the significance of the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Tags

NGSS.MS-PS1-1

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded.